Immunogen sequence: KFSRSADAPA YQQGQNQLYN ELNLGRREEY DVLDKRRGRD PEMGGKPRRK NPQEGLYNEL QKDKMAEAYS EIGMKGERRR GKGHDGLYQG LSTATKDTYD ALHMQALP. CD3z complex is crucial in transducing antigen-recognition signals into the cytoplasm of T cells and in regulating